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webView(_:runJavaScriptConfirmPanelWithMessage:initiatedByFrame:completionHandler:)

Displays a JavaScript confirm panel.

Declaration

optional func webView(_ webView: WKWebView, runJavaScriptConfirmPanelWithMessage message: String, initiatedByFrame frame: WKFrameInfo, completionHandler: @escaping @MainActor @Sendable (Bool) -> Void)
optional func webView(_ webView: WKWebView, runJavaScriptConfirmPanelWithMessage message: String, initiatedByFrame frame: WKFrameInfo) async -> Bool

Parameters

  • webView:

    The web view invoking the delegate method.

  • message:

    The message to be displayed.

  • frame:

    Information about the frame whose JavaScript process initiated this call.

  • completionHandler:

    The completion handler to call after the confirm panel has been dismissed. Pass True if the user chose OK, and pass False if the user chose Cancel.

Discussion

For user security, implementations of this method should call attention to the fact that a specific website controls the content in this panel. A simple formula for identifying the controlling website is frame.request.URL.host. The panel should have two buttons, typically OK and Cancel.

See Also

Displaying UI panels